@primary: #007bff;
@secondary: #6c757d;
@success: #28a745;
@info: #17a2b8;
@warn: #ffc107;
@danger: #dc3545;
@dark: #343a40;
@words: #373737;

.self-center(@type: absolute) {
    position: @type;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
}
